338815 has 4 divisors (see below), whose sum is σ = 406584. Its totient is φ = 271048.

The previous prime is 338803. The next prime is 338839. The reversal of 338815 is 518833.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 338815 - 2⁷ = 338687 is a prime.

It is a super-2 number, since 2×338815² = 229591208450, which contains 22 as substring.

It is a Duffinian number.

338815 is a lucky number.

It is a plaindrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33877 + ... + 33886.

It is an arithmetic number, because the mean of its divisors is an integer number (101646).

2³³⁸⁸¹⁵ is an apocalyptic number.

338815 is a deficient number, since it is larger than the sum of its proper divisors (67769).

338815 is an equidigital number, since it uses as much as digits as its factorization.

338815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67768.

The product of its digits is 2880, while the sum is 28.

The square root of 338815 is about 582.0781734441. The cubic root of 338815 is about 69.7141403438.

It can be divided in two parts, 3388 and 15, that added together give a triangular number (3403 = T₈₂).

The spelling of 338815 in words is "three hundred thirty-eight thousand, eight hundred fifteen".